Mandrel for forming receptacles from fibrous material



MANDRELFOR FORMING REGEPTACLES rnom nsnous MATERIAL. APPLICATION FILEDF8.21, 1920.

1,358,635 Patented Nov. 9,1920.

i 25 ceptacle which it is desired to make.

UNITED STATES, 7

MILTON E. HANSON, OF POUGHKEEPSIE,

' BAKER, SECRETARY PATENT OFFICE. 1

NEW YORK, ASSIGNOR TO NEWTON" D. or WAR,-TRUSTELE. J

MANDREL For; FORMING RECEPTACLES FBQM FIBROUSMATER -I AL Specificationof Letters Patent.

, Application filed February .21, 1920f SjerialINo. 3 0,428.

rrtianunnnn THE. Aer or MARCH 3, 1883, easm'rlt eas.)

To all tvhoinit concern l' Be it known that I, -M1L'roN E. HANSON, acitizen of the. United States, residing in Poughkeepsie, New York, haveinvented dihprovementsin Mandrels for Forming Receptacles .-from.Fibrous Material, of which the following is a specification.

The invention" described herein 'may be used by the Government, or anyofits ofiicers or employees, in prosecution of work for the Government,or by any other person in the United" States, without payment of anroyalty thereon.

his invention relates to devices for forming receptacles of fibrousmaterial and more specifically'vessels capable of serving as-air, gas orsmoke filters; These filters may be used for removing dust, smoke, solidpart1cles,-bacter1a, steam and toiiic substances from air which becomeshighly purified'after passing through the same. 1

Among the objects of this invention isto provide a device whereby, thefibrous ma- 'terial willbe formed upon a cage having a a .to provide amandrel with a perforated tube,

shape conforming to the interior of the re- A furtherobject of thisinventionis to providemeans whereby the felt'may be relieved of thewaterv contained therein by means of suction, the suction also servingto compress and pack the fibers closer together.

A more specific object of'this invention is Substantially"centrallylocated, this perforated tube having vanes radiating therefrom, thevanes serving to provide separate compartments between the perforatedtube and aperforated cage fittingover the frame,

the vanes alsoserving t'o direct the water.

within the mandrel cage toward the central a perforated tube as themandrel revolved around its horizontal axis', thus permitting the waterto be sucked out through the peras shown in F ig. (2).

lg. 3 shows the cage (9) placed over the; structure formed by theperforated tube (1) drel, having the perforated cage attached to theframe, which is a different modification from that shown in Fig. 1. Inthis view a portion of the cage is broken away to Patented Novl 9, 1920.

Fig. 2 is an end view .of this mandrel frame. I l ,Fig. 3 isalongitudinal view of the manshow the construction of the mandrel frame.

Fig. 4 is'an end view of the device shown inFig. 3.

Figs. 5 and 6 show in a diagrammatic manner the two types of mandrelframe in operatingpositions. p

I Referrmg to F ig. 1, there is shown a perforated tube (1) of thinmetal soldered into a pipe nipple (2) which screws into a cap (3), saidcap being-also threaded at (4:) so as to permit its attachment to asource of suction. It should be understood that the perforated tube,nipple and cap can bemade integral instead 0 in sections as shown.Aroundpipe nipple (2) there is mounted a box affair or housing(5)'whichis fashioned to take the shape of the inside of the'filterr Thenipple'runs substantially through the center of this box. On theperforated metal tube '(1) .there are mounted metalsheetsrorvanes (6)and the structure formed by' these also conforms to the shape of the box(5)..

These vanes are radial; and "longitudinal,"

while the, vanes (7 inthe modification I shown in Fig. 3 arecircumferential. The

tube (1) may have its end perforated,

and vanes (7). This cage consists of a metal can having the bottom andwall perforated and having nearits open end a flange (10), saidflange'serving as a sto against which the fibrous material can sett eandthus produce a square edge all around the mouth of the receptacleformed. on the. portion (9) of this cage. The extension (11) above theflange (10)v is not perforated,'and when the ,cage is in position, thisportion (11).

fits over-thebox (5). In order to make the structure air-tight, and topermit the use of suction, an elastic band (12) is used to'closethe'joint between the cage and box (5). In both modificatlons thevanes serve .also as guides and bracesfor the cage.

.When cage (9) is placed over a structure, such as shown in Fig. 1, thevanes (6) radiating' longitudinally from the perforated tube (1) andreaching the wall of the cage.

will form separate compartments (illustrated in Fig. 5). When thismandrel is in use it is placed in the furnish with the water linereaching above the axis of the mandrel, as shown in Fig. 5. As themandrel revolves, and suction is applied throu h the central perforatedtube (1), the felt Wlll collect upon the outside of the cage andgradually build up. The suction serves to relieve the felt of its waterand also to pack the fibers of the felt together. The vanes (6) serveas. channels for any water which v may be drawn through the perforatedcage and-felt formed thereon and the water from one of these channels orcompartments is not permitted to reach any of the other-comtacle isattained, the water is sucked out.

therefrom and the receptacle removed from thecage.

The present invention is not limited to the specific details set forthin the for'ego ing examples which should be construed as illustrativeand not by way of limitation,

and in view of the numerous modifications A which may be effectedtherein'without departing from'the spirit and scope of this invention itis desired that only such limitations be imposed as are indicated in theappended claims.

I claim as my invention:- r 1. A mandrel for making receptacles fromfibrous material comprising a frame having 'an inner core formed ofperforated sheet material, a perforated cage fitting over and In themodification shownin Fig. (3),-

detachable from said frame and vanes upon said core extendlng to theWalls of said cage, sald vanes serving as guldes and braces for :theperforated cage.

2. A mandrel for making receptacles from fibrous material comprising aconduit having one part perforated and the other part termlnating in acap, vanes upon the perforated portion-of said conduit and a detacha-blecage having perforated bottom and wall fitting upon said conduit andvanes. 3. A mandrel for making receptacles from fibrous materialcomprising a frame having a conduit with one part thereof perforated andthe other. part extending through a housing and fitting into a cap,vanes upon said perforated portion of said conduit and a detachableperfor'ated'cage fitting over said conduit and to said housing.

4:. A mandrel for making receptacles from fibrous material comprising aframe having an inner core formed of perforated sheet material, aperforated cage fitting over and detachable from said frame andlongitudinal,- radial vanes upon said core extending to the walls ofsaid cage, said longitudinal, radial vanes serving as guides and bracesfor the perforated cage and forming separate compartments from eachother. I

5. A mandrel for making receptacles from fibrous material comprising ,aconduit having one part perforated and the other part termlnatlng in acap, longitudinal, radial vanes upon the perforated portion of saidconduit and a detachable cage having perforated bottom and wall fittingupon said conduit and vanes.

6. A mandrel for making receptacles from fibrous material comprising aframe having a conduit with one part thereof perforated and the otherpart extending through a housing and fitting into a cap, longitudinal,

radial vanes upon said perforated portion of said conduit and adetachable perforated cage fitting'over said perforated conduit and tosaid housing. a

1 MILTON E. HANSON.

